The Electronic Whole Earth Catalog is a very early CD-ROM presentation of The Whole Earth Catalog. Utilising HyperCard, The Electronic Whole Earth Catalog consists of over 9000 cards connected to one another with hypertext; essentially the web before the web existed, but offline!
This emulated-in-browser item contains a 430MB disk image so please be patient while it downloads. Once the emulation has booted, open the Whole Earth Catalog folder and double click "Home" to launch.
You can extract the bin & cue from the 7-zip archive, and then open the cuesheet in IsoBuster to view the files, or mount the cuesheet in your favorite Macintosh virtual machine (or create a CD-R copy of the disc to use on a real Macintosh, provided that its CD-ROM drive is able to read CD-R discs).